Estimate how many molecules of air are in each 2.0-L breath you inhale that were also in the last breath Galileo took. Assume the atmosphere is about 10 km high and of constant density. What other assumptions did you make?

Q: Consider the following chemical reaction: 2H₂O(1)→ 2H₂(g) + O2(g) What mass of H₂O is required to…

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Q: What are the important considerations in reporting analytical results?

A: Analytical result : A data analysis after experiment is called analytical result.

Q: 27. (10) Write a reasonable mechanism for the following transformation. H₂SO4 OH OH 28 + Predict the…

A: Here we have to write the mechanism of the following given reactions. Here the first reaction is…

Q: Which of the following is paramagnetic? [Zn(H₂0)6]²+ [Cu(H₂0)6]* Onone of these [Co(NH3)6]³+ (strong…

A: “Since you have asked multiple question, we will solve the first question for you. If youwant any…

Q: Roles of chemistry in agriculture, medicine, food, industry, home and water.

A: Role of chemistry in agriculture Agriculture deals with the generation of organic goods using both…

Q: 2. Which of the following reactions will not occur? A) B) D) -Li + Cul MgBr + CdCl₂ + Cul E) -Li…

A: Organic Reactions

Q: What is the sum of the coefficients of reactants and products for the dehydration equation of nickel…

A: Given,  The sum of the coefficients of products and reactants in the dehydration equation of nickel…

Q: what is the pH of 20.00mL 0.0350M H2SeO3 by 0.5M NaOH solution at titrant volumes 0mL 5mL 10mL 15mL…

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Q: Enough of a monoprotic weak acid is dissolved in water to produce a 0.0104 M solution. The pH of the…

A: Given, pH of the solution is 2.63 and the concentration is 0.0104M We can determine the Ka using the…

Q: Which of the following structures is the cis configuration of 1,3-dimethylcyclohexane with both…

A: We can solve this question by considering the position of the substituents in the given compounds.

Q: Product C CHOICES: MAT BAT cold, dilute, neutral KMnO4 OH Product A is Product B is Product C is H₂,…

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Q: → 2KBr, 1. In the redox equation 2K + Br₂ a. what element is reduced? b. what element is oxidized?…

A: Redox reactions are those reactions in which oxidation and reduction take place simultaneously.

Q: Question 4 and 5 is not answered? It is only answered untill 3rd question, it is incomp

A: From the experimental data, moles of Cu, moles of Cl, and moles of H2O can be found out. Empirical…

Q: How is the mass of oxygen measured? Group of answer choices By taking the sum of the potassium…

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Q: 1 Charles’s law states that the volume of a gas is directly related to the absolute temperature when…

A: Given,              V1= 1.18 × 103 L                               T1 = 30℃ = (30 + 273.15 ) =…

Q: Experiment 1 2 3 4 HgCl₂ (M) 0.105 0.105 0.052 0.052 C₂04² (M) b. What is the rate constant k? 0.15…

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Q: 2. In a water molecule, the distance of the oxygen from the attached hydrogen atoms is 0.0957[nm],…

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Q: What is the Electrolysis industrial chemical process,   a) Explain what is produced, b) the…

A: Electrolysis is a process by which a chemical reaction is carried out by means of the passage of an…

Q: 10. Draw and provide an IUPAC name for the acyclic diene that forms trans 1,2-…

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Q: showing the flow of electrons. X A. 1. [(CH₂)₂CH)₂NLi 2. CH CH₂CH₂CH₂Br Provide a mechanism for each…

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Q: How many stereoisomers does this compound have?

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: After 40.0 days, how much Ac-225 remains if the starting mass was 94.0 g? Ac-225 has a half life of…

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Q: Which of the following structures is the trans configuration of 1,2-dimethylcyclohexane with both…

A: Here we have to identify the trans configuration of 1,2- dimethyl cyclohexane with both bonds in…

Q: QUESTION 3 Which is the least reactive compound by the SN2 mechanism? O a. CH3CH₂CH₂CH₂Br O b. Oc Br…

A:

Q: What is the Electrolysis industrial chemical process,  (and write a half-page summary of it in 12pt…

A: Concept- Electrolysis involves  oxidation reduction reaction at anode and cathode respectively.

Q: To purify benzil crystals and get rid of any leftover traces of benzoin, what would be the best…

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Q: Titration is a common laboratory method of quantitative chemical analysis. During the titration of…

A: Following titration is strong base-strong acid titration.

Q: Use the information in the ALEKS Data tab to sort the following chemical species by reducing power.…

A: Reducing agent means which reduces other and oxidised itself,so highest reducing power means highest…

Q: MISSED THIS? Read Section 6.5 (Pages 225-228); Watch IWE 6.8. A sample of gas has a mass of 0.555 g…

A: Given data  P = pressure of the gas = 734 mm Hg  =734760= 0.966 atm ( because 1 atm = 760 atm) V =…

Q: Which of the following is the structure for 2,3,4,8-tetramethyldec-5-yne? O O

A:

Q: Is the following compound aromatic, antiaromatic, nonaromatic, or is it not possible to tell? O a.…

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Q: How are the following molecules related?

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Q: A o bond arises from the straight-on overlap of two atomic orbitals. The electron density lies along…

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Q: MISSED THIS? Read Section 6.6 (Pages 228-235); Watch KCV 6.6, IWE 6.10. A gas mixture contains 1.29…

A: The ratio of the number of moles of one component of a solution or mixture to the total number of…

Q: Aqueous hydrochloric acid (HCI) reacts with solid sodium hydroxide (NaOH) to produce aqueous sodium…

A: Given: Mass of HCl = 2.6 g Mass of NaOH= 1.8 g Mass of water produced (Actual yield) = 0.640 g…

Q: 3. 4. Activity 1: Using the illustrations below, describe what happens in each of the attractions…

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: Consider the following reaction: Enter the complete ionic equation for this reaction. Express your…

A: An aqueous solution of hydrogen bromide reacts with an aqueous solution of calcium hydroxide to form…

Q: What volume (in mL) of a 0.100 M HNO3 solution is required to completely react with 43.5 mL of a…

A:

Q: ch IWE 30 a T Part A A sample of gas has a mass of 38.7 mg. Its volume is 222 mL at a temperature of…

A: Mole can be defined as a standard unit for measuring large quantities of very small entities such as…

Q: (NH4)2S(aq) + SrCl₂(aq) - Express your answer as a chemical equation. Enter NOREACTION if no…

A: Given reactions are examples of double displacement reaction . In double displacement reaction…

Q: Rank the following diatomic species of carbon in order of bond length and bond strength. A. C₂ B.…

A: Higher the bond order lower will be the bond length and higher bond strength.

Q: What is the mass of magnesium fluoride that contains 7.29 × 1024 F atoms?   Relative atomic…

A: Given,  The mass of magnesium fluoride that contains 7.29 × 1024 F atoms is:

Q: 2. A 2.300 g sample of CuxCl, zH₂O weighed only 1.950 g after heating. Aft aluminum was added, a…

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Q: Consider the reactions below and the pool of choices. عيله میلی BAT HO Reagent 2 MAT Alkene 1 SAT…

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Q: Give the IUPAC name for the following compound. Be sure to answer all parts. O cis 12…

A: Here we have to write the complete IUPAC name of the following given compound.  The writing IUPAC…

Q: 6. In the reaction 2 H₂ + O2 → 2H₂O, 2.95 g of H₂ and 8.50 g of O2 were used. a) What is the…

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Q: 1. In each box, write the number of signals in the "C NMR you could predict Br 5

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Q: For a certain substance, the time rate of conversion is proportional to the square of the…

A: From given statement : the time rate of conversion is proportional to the square of the…

Q: Illinois Central College CHEMISTRY 130 Laboratory Section: PRELAB: Exp.12 Molecular Structure 1.…

A: Lewis structure are also known as dot structure. These dot structure show the bonding between atoms…

Q: A. What is the hybridization of the central atom in CH4? Hybridization = What are the approximate…

A: Hybridization of the central atom can be calculated by using the formula: H = 1/2 (V + M - C + A)…

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.